Home / 21,309,372.18-29,399,737.86-12,135,519.54

Finding the Fourth Proportional to 21,309,372.18, 29,399,737.86 and 12,135,519.54

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Solution

The fourth proportional to 21,309,372.18, 29,399,737.86 and 12,135,519.54 is: 16,742,919.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,309,372.18 : 29,399,737.86 = 12,135,519.54 : x
  2. Step 2: Convert to fraction form
    21,309,372.18/29,399,737.86 = 12,135,519.54/x
  3. Step 3: Cross multiply
    21,309,372.18x = 29,399,737.86 × 12,135,519.54
  4. Step 4: Simplify right side
    21,309,372.18x = 356,781,093,270,907.75
  5. Step 5: Solve for x
    x = 356,781,093,270,907.75/21,309,372.18
  6. Step 6: Final answer
    x = 16,742,919.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.